Thank you everybody for you great welcome.
My truck arrived to Spain in the 60`s from USA.In the 60`s the truck was original engine,transmission and breaks system.
In 80`s the spanish army transform all m34 and m35.The engine was change for Barreiros engine,Spanish diesel engine.The transmission was change for Barreiros transmission,4+R.
The breaks sytem was change.Now it is three break master pumps.One for each axel.
The stering is now hydraulic,thank you god!.
The cabin panel is different.The speedometer is in Km/h,etc.All the dash plate are misssing,very hard find it for m34.
But now after a long time I just found a OA331 and transmission .In a few month it will be a 90% original.
In a few day I wil do some pictures.
Thank you again for the green family.